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| Licence | Public Domain Mark 1.0 | | Usage | Available for free download. In the event of reproduction or exploitation of the document or parts thereof, the SuUB Bremen asks you, in accordance with usual scientific practices, to provide:
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| | Reference | Düngungsversuche in den deutschen Kolonien / Reichs-Kolonialamt. Berlin, 1913 - 1920. Staats- und Universitätsbibliothek Bremen, Al:27 242 / Public Domain Mark 1.0 |
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